I found HW temp on heating system in MER30 at 90 deg. Raised water temp up until OA dropped and then removed override
Closed down return damper to make room pressure positive. JCI is waiting on parts to replace, until then leave override on return damper command. I added a annotation to Metasys.
The water supply feeding the radiant system for our 5305 Building has been valved off at the fill valve. A copper coupling is leaking in the Dr. McMurtrie’s office ( southeast corner of the 2nd floor). Brandon & Jim investigating options for repair. As a ‘just in case’ I have commanded Radiant Pumps 1 & 2 off in METASYS.
Osc ahu 53-32 tripped before 4 PM on Saturday, current overload. Took screen shots off of Metasys and sent to Bernie. Noticed on start up that return air ductwork was being pulled in a bit, there was lots of suction on the ahu doors, could hardly open them. O/A dampers were 100% closed, M/A 100 % open. Noticed on trends that vfd went to 100% around same time that O/A damper dropped below 10%, and then fan tripped. Wondering if there isn’t enough return air and it’s causing the motors to over amp. Maybe putting a o/a damper minimum setting in Metasys could be a test to see if we get anymore trips? Also found chilled water pump E-9056 was tripped on overload, reset. Put in hand to test, ran fine.
It appears NAE-03 died after gen testing. I programed & replaced with our back-up NAE. All lighting & chillers should be back in auto, resynchronized with schedules, interlocks, & set points and back on Metasys control.